MICROTENSILE BOND STRENGTH OF RESIN CEMENTS TO CARIES-AFFECTED DENTIN

Autor(es)

Suzuki, Thais Y. U. ^[1] ; Godas, Andre G. L. ; Guedes, Ana P. A. ; Catelan, Anderson ^[2] ; Pavan, Sabrina ^[3] ; Briso, Andre L. F. ; dos Santos, Paulo H. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP, Aracatuba Sch Dent, Dept Dent Mat & Prosthodont, Sao Paulo State Univ, Aracatuba - Brazil

^[2] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, Piracicaba - Brazil

^[3] FAI, Adamantina Sch Dent, Adamantina - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PROSTHETIC DENTISTRY; v. 110, n. 1, p. 47-55, JUL 2013.
• Citações Web of Science: 11

Resumo

Statement of problem. The bonding of resin materials to caries-affected dentin, especially self-adhesive cements, remains a challenge in dentistry. Purpose. The purpose of this study was to evaluate the bond strength of different resin cements to sound or caries-affected dentin at 24 hours and 6 months after the bonding procedure. Material and methods. Thirty-six human molars were used, 18 sound and 18 affected by caries. Indirect composite resin blocks (Tescera) were bonded to dentin by using 3 different resin cements: RelyX ARC, Panavia F, and RelyX Unicem. A universal testing machine was used to measure the microtensile bond strength 24 hours and 6 months after the bonding procedure. Representative specimens were analyzed with a scanning electron microscopy. The results were submitted to 3-way analysis of variance and the Fisher test (alpha=.05). Results. The highest values of microtensile bond strength were found with RelyX ARC for both tooth conditions (P<.001). There was no difference between RelyX Unicem and Panavia F (P>.05). There was no difference between caries-affected and sound dentin (P=.89). Conclusions. Caries did not influence the bonding strength of resin cements to dentin. (AU)

• Processo FAPESP: 09/17472-7 - Resistência de união de cimentos resinosos a dentina afetada por cárie
• Beneficiário: André Gustavo de Lima Godas
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica